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Finding the Fourth Proportional to 393,660, 590,577.48 and 144,342

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Solution

The fourth proportional to 393,660, 590,577.48 and 144,342 is: 216,545.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,660 : 590,577.48 = 144,342 : x
  2. Step 2: Convert to fraction form
    393,660/590,577.48 = 144,342/x
  3. Step 3: Cross multiply
    393,660x = 590,577.48 × 144,342
  4. Step 4: Simplify right side
    393,660x = 85,245,134,618.16
  5. Step 5: Solve for x
    x = 85,245,134,618.16/393,660
  6. Step 6: Final answer
    x = 216,545.08

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.